In diabetic patients, serum endocan level has been significantly increased in patients and the levels on the long-term complications are correlated. Based on the Iinformation obtained from these studies, it can be said that there is a strong association between diabetes and serum endocan levels.

It has been shown that endocan level of plasental tissue in gestational diabtes patients is significantly increased when looking at the same week compared with plasenta tissue samples of helathy pregnancy. From the information obtained from these studies, it can be said that there is a strong association between diabetes mellitus and serum endocan levels. investigators aimed to determine the relationship between serum endocan levels and gestational diabetes in the study.

Inclusion Criteria:

• being pregnant at 24-26 weeks of gestation
• having oral glucose toleranse screening test
• age between 18-45 years

Exclusion Criteria:

• having in utero mort fetus
• having a previous diagnosis of diabetes
• having a multiple pregnancy
• having a coronary artery disease
• having preeclampcia
• having a pregnancy obtained by assisted reproductive technology
• using cigarette
• using alcohol